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I am looking to try to wire a Gecko G320x to the 7i76U. I found this diagram , which I am planning on using to complete the wiring.

Now, in the manual , there is a diagram of the board on page 3 and a list of the pins ordered by DB25 pin on page 4. The layout of the diagram and pins ordered by DB25 is not as helpful as the diagram I alluded to which another user created.

I have another BOB from CNC4PC, the C11G. In its  documentation  on page 18 you can the pins are labeled on the board diagram making it much easier to figure out which pins to use to wire a stepper/servo driver to the board.

@PCW, after some googling, I believe you are the owner of Mesa Electronics. Is that correct?

If so, I'd like to humbly suggest updating your documentation for the 7i76U to include something like the diagram I found on the forum to make it easier for people to figure out the pins for the 7i76U.

Hello, thank you for that, I added it but still the same result.

<masters>
<master idx="0" appTimePeriod="1000000" refClockSyncCycles="1">
<slave idx="0" type="generic" name="IS620N_ECAT_v2.6.8" vid="0x00100000" pid="0x000C0108" configPdos="true">
<dcConf assignActivate="300" sync0Cycle="*1" sync0Shift="0"/>
<syncManager idx="2" dir="out">
<pdo idx="1701">
<pdoEntry idx="6040" subIdx="00" bitLen="16" halPin="cia-controlword" halType="u32"/>
<pdoEntry idx="6060" subIdx="00" bitLen="8" halPin="OperationMode" halType="s32"/>
<pdoEntry idx="607A" subIdx="00" bitLen="32" halPin="TargetPosition" halType="s32"/>
<pdoEntry idx="60FF" subIdx="00" bitLen="32" halPin="TargetVelocity" halType="s32"/>
</pdo>
</syncManager>
<syncManager idx="3" dir="in">
<pdo idx="1b01">
<pdoEntry idx="6041" subIdx="00" bitLen="16" halPin="cia-statusword" halType="u32"/>
<pdoEntry idx="6064" subIdx="00" bitLen="32" halPin="ActualPosition" halType="s32"/>
<pdoEntry idx="6061" subIdx="00" bitLen="8" halPin="ActualOperationMode" halType="s32"/>
<pdoEntry idx="606C" subIdx="00" bitLen="32" halPin="ActualVelocity" halType="s32"/>
<pdoEntry idx="6077" subIdx="00" bitLen="32" halPin="ActualTorque" halType="s32"/>
</pdo>
</syncManager>
</slave>
</master>
</masters>

What is your motor driver?

Is it a genuine Leadshine DM556? (probably not)

Because there is such a vast array of clones of that driver, you should post the link to the exact one you bought.

Also, 48VDC is only 2V away from the driver's maximum voltage of 50VDC, which is not great.

If you can reduce their supply voltage by even a few volts, you should do so to make sure your drivers don't get damaged.

Your driver is technically too small.

4.2A motor current means 4.2A RMS, or about 6A peak.

Peak current is the RMS current multiplied by √2 (approximately 1.4).

You should set your driver to the highest current (5.6A peak).

Your motor won't be quite as powerful as it could be because the current is a bit too low, though you'll probably be fine.

Also, your driver will be working at its maximum rated current, so it will get quite hot, though you should not encounter any problem.

If you find that your motor is too weak, consider buying these drivers:
www.aliexpress.com/item/1005005291871448.html

yes, you are right. I'll do it.

To close the loop here, this commit (to the Master branch) clarifies when the LASER and CAMERA buttons become visible:

github.com/LinuxCNC/linuxcnc/commit/ce1e...442d1e9b634e2eb8c5a7

Like I said it may be worth raising an issue on GitHub as the actual behaviour does not match the behaviour in the docs.

With your settings, I only receive 7 values. 

After removing the axes and joints that are not present on my milling machine, the result is the same - only 7 values are received. Sorry, I don't understand the principle of keys entries.

I have now shortened the list to 9 entries and am only using one key= statement. This allows me to transfer all 9 values.
loadusr -W mqtt-publisher \
--mqtt-broker=[MQTT]BROKER --mqtt-user=[MQTT]USERNAME \
--mqtt-password=[MQTT]PASSWORD \
keys=halui.axis.x.pos-relative,halui.axis.y.pos-relative,halui.axis.z.pos-relative,\
halui.joint.0.is-homed,halui.joint.1.is-homed,halui.joint.2.is-homed,\
halui.estop.is-activated,halui.machine.is-on,halui.program.is-running \

  
Peter

1. usually a good idea to post the files
2. start your config from a terminal ($ linuxcnc) and check output for clues
3. I would recommend using a simple texteditor to edit the files not a word processor like the one in your screen shot.

If you are on the US, mesaus has some.

if in the EU, eusurplus shows stock


We will have more 7I97T stock in 7-8 weeks

Right! Well, I was sure as I wrote this that the 7I83 also has encoder inputs as well!
7i97T here says it's out of stock though:

store.mesanet.com/index.php?route=produc...t_id=397&search=7i97

Do you know when are you going to have it back in stock?

Also, on the previous subject, if I decided to go the sserial route adding e.g. a 7I85, is one of the stock firmwares going to work without modifications?

Hello All,
I am currently driving my stepper motors via DMT556T's with a 48vdc source.

The motors are from Stepper-Online model 23HS45-4204S .
They can handle 4.2A based on the specs provided.

The current settings offered by the DMT556T are as follows:

 

My question, which Peak Current setting should I be using?

You would need an encoder interface as well (7I85,7I85S,7I89)

Might be simpler/cheaper to use a 7I97T
 

I'm looking at the Mesa cards available now for driving 3 servos with +/-10V and thinking to go with a 7I94T, one 7I83 for the servo drives and one 7I84U for various I/O like limits and buttons. Since I have not worked with this combination before, I would like your input if this is going to work. Are one of these ready made firmwares going to work, or I will need to create a new one (I have done it more than 10 years ago for creating a custom one for a 5i22, but not sure what I did back then  )

7i94t_16m_fallback.bin
7i94t_5abobd.bin
7i94t_7i74_ss_bissd.bin
7i94t_7i74_ss_bissd.pin
7i94t_7i74ssd.bin
7i94t_7i74ssd.pin
7i94t_7i76d.bin
7i94t_7i77d.bin
7i94t_7i85sd.bin
7i94t_7i89d.bin
7i94t_7i89d.pin
7i94t_bissd.bin
7i94tss_bissd.bin
7i94tss_bissd.pin
7i94t_ssd.bin
7i94t_ssid.bin

Hello again,
just a little update. On the repository i have added more information about current configuration but still a lot of work need to be done. Unlikely I have only one motor so i can't scale along 3 axes.

I have also updated a video on YouTube.



Next steps are:

• resolve joint 0 amplifier fault when toggle machine power. This seems to happen only one time after LinuxCNC opening.
• run and understand LinuxCNC / HAL Latency Test for a better configuration of LinuxCNC
• set machine configuration parameters like: encoder resolution, velocity, acceleration, pitch of leadscrew...
• implement PID control
• customizing using PyVCP